“Elijah Wood is exactly my size, so he’s been thrilled that we have what he’s looking for.” — Daniel Lewis on outfitting the diminutive star of “The Hobbit.” (Reuters)

When diminutive actor Elijah Wood needed a suit for last week’s premiere of “The Hobbit” in New Zealand, his stylist didn’t dial up some slick Italian tailor in Milan.

Instead, LA-based Shirley Kurata went to Williamsburg, where she had Daniel Lewis of Brooklyn Tailors whip up a slim-cut blue suit for her client.

“He’s exactly my size, so he’s been thrilled that we have what he’s looking for,” says Lewis of Wood.

Both Lewis and Wood measure 34 inches across the chest. Most suit sizes start at 36 inches, which can make buying the wardrobe staple almost impossible for smaller gents.

It was this sartorial problem that planted the seed of Lewis’ unlikely career: The San Diego native studied fine art at the University of California, Santa Barbara and assumed he’d embark on a career in the editorial world as a photographer.

“The spark that piqued [my] interest in tailored clothing was frustration as a consumer. I got to the point in life where I was finishing up school, and I wanted a suit that fit me,” says Lewis, 29, who began teaching himself design by reading books. “That doesn’t really exist, and they say a good business is one that is predicated on seeing something that is missing.”

His dapper duds — whose signature look is a two-button jacket with slim lapels and tapered trousers, and which start at chest size 34 — were launched seven years ago and have recently caught the eye of fashion and celebrity types. Barneys began selling Lewis’ wares this fall, and men’s fashion bible GQ profiled him in its November issue.

In April, the Beastie Boys wore Lewis’ designs to their Rock and Roll Hall of Fame induction, Aziz Ansari donned a gray number for an October appearance on “Conan” and starlet Keira Knightley recently stopped in to shop for her fiancé, James Righton.

“A lot of musicians that are walking around these streets and live around here are customers of ours,” says Lewis, adding that he just designed a wedding suit for Paul Collins of the band Beirut but would also love to add some of his favorite rockers — such as Mick Jagger and Bob Dylan — to his client list.

But it’s not just skinny rock stars and elfin celebs that he’s outfitting. Lewis is also catering to young, stylish hipsters looking to make their first foray into proper menswear.

“When you think of custom tailoring you tend to think of unattainable [fashion], but for a very small slice of people. We’ve tried to make a great product at a price that is an investment but also accessible,” says Lewis.

His off-the-rack garb, made from English and Italian textiles, starts at $850, while custom suits are $1,000 and up.

He started his business working with a craftsman in Kathmandu, Nepal, and began fitting customers in his apartment on a low-key basis. But about four years ago, he made it more official with a Web site and business name: Brooklyn Tailors.

“I’ve always had a love for traditional hand-tailored clothing — the type they do on Savile Row, England,” he adds.

“We kind of put ourselves out there, and very quickly we found ourselves taking appointments back to back on a Saturday in our 600-square-foot apartment,” he says.

By last fall, Lewis’ operation grew too big for his digs, so he opened his small, yet airy, storefront with whitewashed walls and a large window. Mirrors placed on salvaged doors rest near the entrance. A wall of vintage-style cubbyholes is actually an Ikea unit that Lewis abused with spackle to appear weathered.

His wife, Brenna, whom he met in middle school, quit her daytime gig in the editorial world to help run the store.

Though his clothes, which include custom shirts and ties, are now carried at Barneys, Lewis wants to stay true to his original aesthetic.

“I’m more inspired by the guys walking around the streets here. I don’t look at what we do as a fashion collection,” he says. “We’re trying to outfit people with fashionable but also classic, timeless clothing.

“A lot of people move to Brooklyn when they’re young and maybe have their first job — they come in and say, ‘I need my first great suit,’ ” he continues. “My parents’ generation rebelled against the suit. But for guys in their 20s and 30s, it’s exciting to put on a suit and tie. It feels fresh.”